Coalesce requirements.txt into setup.py (#2017)

* Coalesce `requirements.txt` and `tests/requirements.txt` into `setup.py`

* Remove requirements for tests

* Parse tests requirements in setup.py

* Append extra dependenices in test_requirements in setup.py

* Modify CI build to pass the tests

* Correctly install black requirements

* Install all requirements to pass the tests

scripts/build_posix.sh

@@ -78,7 +78,7 @@ install_dependencies()
 	gem install --no-document fpm
 
 	print_info "Installing requirements..."
-	pip install -r requirements.txt
+	pip install -e .[all]
 
 	print_info "Installing pyinstaller..."
 	pip install pyinstaller

scripts/build_windows.cmd

@@ -15,7 +15,7 @@ if %errorlevel% neq 0 (echo Error: pip not found && goto :error)
 if not exist "C:\Program Files (x86)\Inno Setup 5\ISCC.exe" (echo Error: Couldn't find Inno Setup compiler. Please go to jrsoftware.org/isinfo.php and install Inno Setup 5 && goto :error)
 
 echo ====== Installing requirements... ======
-call pip install -r requirements.txt || goto :error
+call pip install -e .[all] || goto :error
 call pip install pyinstaller || goto :error
 
 echo ====== Building dvc binary... ======

scripts/ci/before_install.sh

@@ -19,7 +19,7 @@ if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
     python --version
 fi
 
-pip install -r tests/requirements.txt
+pip install -e .[tests]
 
 # stop the build if there are any readme formatting errors
 python setup.py checkdocs

scripts/ci/install.sh

@@ -15,8 +15,8 @@ function retry {
 # networking issues. Thus, let's retry a few times to see if it will eventially
 # work or not.
 retry pip install --upgrade pip setuptools wheel
-retry pip install -r requirements.txt
-retry pip install -r tests/requirements.txt
+retry pip install -e .[all]
+retry pip install -e .[tests]
 
 git config --global user.email "[email protected]"
 git config --global user.name "DVC Tester"